Adoptive Standards:
Design: API609 / AWWA-C504 / BS EN593 / GB/T12238
Face to face: API609 / ASME B16.10 / BS EN558 / GB/T12221
Flange end: ASME B16.42 / ASME B16.47 / BS EN1092-2 / GB/T9113 / GB/T 17241.6
Pressure test: API598 / BS EN12266 / GB/T 13927
Applications：
Fresh water / Sea water / Salts water
Steam / Gas / Air
Alkali / acid / oil
Working Temperature：
From -20℃ to +220℃
Design features:
1. Bidirectional sealing.
2. Zero leakage
3. Good flow regulating function and sealing performance.
4. Different seat designs satisfy various service conditions
5. The disc can move away from the seat fast and prolong the valve life.
6. Simple in structure, and convenient in mounting, dismounting and change.
